If we're not vigilant foreign countries can have an impact on the political debate in the United States in ways that might not have been true 10, 20, 30 years ago in - in part because of the way news is transmitted and in part because so many people are skeptical of mainstream news organizations that - everything's true and everything's false.

If you look at sort of how politics has divided itself here in this country, the big divide right now is between urban areas, which have become increasingly Democratic, and rural or exurban areas that feel as if they're being ignored.

The walls between old allies on either side of the Atlantic cannot stand. The walls between the countries with the most and those with the least cannot stand. The walls between races and tribes; natives and immigrants; Christian and Muslim and Jew cannot stand. These now are the walls we must tear down. We know they have fallen before.

Where we get into problems, typically, is when our personal religious faith, or the community of faith that we participate in, tips into a sort of fundamentalist extremism, in which it's not enough for us to believe what we believe, but we start feeling obligated to, you know, hit you over the head because you don't believe the same thing. Or to treat you as somebody who's less than I am.

America's nurses are the beating heart of our medical system.

We have come from a time of the large-scale, planned, Al Qaeda-style attacks, to the encouragement of lone wolves: Fort Hood, Chattanooga. To the encouragement of people to act on their own.

We have to enforce the laws we've already got, make sure that we're keeping guns out of the hands of criminals, those who are mentally ill. I also share your belief that weapons that were designed for soldiers in war theaters don't belong on our streets. And so what I'm trying to do is to get a broader conversation about how do we reduce the violence generally.